I don't find them particularly aggressive, except when spawning. They have been sharing a 30 gal tank with larger Gymnogeophagus gymnogenys Rio Yerbalito comfortably all winter, I removed the Gymnos after the spawn, as they were pinned into an upper corner.
I tried to keep this pairs 5" parents with Madagascans and grammodes for a short time, and they were overwhelmed and died.

The Greater Chicago Cichlid Association — GCCA — is a not-for-profit, educational organization, chartered in the state of Illinois, dedicated to the advancement and dissemination of information relating to the biology of the fishes in the family Cichlidae, with particular emphasis on maintenance and breeding in captivity. We are simply cichlid hobbyists who love cichlids.